The principle of the snail : with your red ball, run the itinerary, collect all your red stones and go to the center of the shell (21) before the computer (blue ball and blue stones).

To begin : before the toss, you choose how many stones to pick.
To pick à stone, it is necessary to arrive exactly on its place. Before throwing the dice, you can choose the moving direction (buttons Forward and Back) and the best dice (piece : 1,2) (tetra : 1,2,3,4) (cube : 1,2,3,4,5,6) ( diamond : 1,2,...,11,12)